Stem Separation
Audio Expansion. Stem Separation is part of Chat Video Pro’s Audio Expansion. It is included with the Creator Bundle and Creator Pass, and available as a DLC add-on for Base. Generations bill to your own fal.ai account at wholesale rates — same as the rest of Studio.
Stem Separation takes a finished audio file and splits it into isolated parts — vocals, drums, bass, and more — so you can remix, mute, or rebuild a mix without leaving Premiere.
When to Use Stem Separation
Pull vocals — acapellas for edits, memes, or remixes
Instrumental beds — remove vocals from a music track you already own rights to use
Remix in the timeline — place Vocals / Drums / Bass / Other on separate tracks
Cleanup passes — isolate a problem stem before repair or replacement
Source audio only from Upload or Recent. Stem Separation does not pull a clip directly from the Premiere timeline yet — export or save the audio first, then attach it here.
Getting Started
Step 1: Open Stem Separation
Open Chat Video Pro (Window → Extensions → Chat Video Pro)
Click Studio → Audio department
Click the Stem Separation card
You’ll see three steps: Input · Stems · Generate.
Step: Input — Source audio
Attach the track you want to split:
Upload — audio file from disk
Recent — audio you used or generated recently in Chat Video Pro
After attach, confirm Source audio, use Change if you picked the wrong file, then Continue.
Step: Stems — Stem options
Choose how many parts to extract, then click Separate Stems.
6 stems (default)
Vocals · Drums · Bass · Other · Guitar · Piano
4 stems
Vocals · Drums · Bass · Other
Start with 6 stems when guitar/piano isolation matters. Use 4 stems for a simpler vocal/instrumental split.
Result pills label the engine as Demucs (6-stem) or Demucs (4-stem).
Step: Generate — Results
Each stem appears as its own audio pill:
Preview any stem
Place on timeline — per stem, at the playhead on a free audio track
Add to Chat — sends the full stem set into the conversation / Library
Try Again — re-run with the same or adjusted stem count
Where stems land in Library
With the Audio Library update enabled, separated stems show under Library → Audio → Stems. They are not listed under Music — Music is for non-stem music items only.
Tips for Best Results
Feed a clean stereo mix when you can — heavy limiting and stacked FX reduce isolation quality.
Separate once, then place only the stems you need (e.g. Vocals + Other for a dialogue bed).
Name or tag takes in chat so you can find the set later in Library → Stems.
Rights still matter: separation does not grant rights to commercial music you don’t own or license.
Troubleshooting
Can’t attach from the timeline
Expected — export/save audio, then Upload or pick Recent
Missing guitar/piano
Switch to 6 stems and Separate again
Can’t find stems in Library Music
Open Library → Audio → Stems
Bleed between stems
Normal for dense mixes — tighten with EQ/automation in Premiere
Engine errors
Check fal.ai key + balance in Settings → Usage, then Try Again
See also
Music Composer — generate new music instead of splitting an existing track
SFX Studio — create new sound effects and Foley
Voiceover Lab — narration instead of pulled vocals
Pricing FAQ — Audio Expansion entitlement
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